Stopper for hot-water bottles



A. B. SHAW.

STOPPER FOR HOT WATER BOTTLES.

APPLICATION FILED FEB. 7, 1921.

1,42 3,46 3 Patented July 18, 1922..

\ ra a j TTHTTTTI} Mama/fizzy; 1525 wa /W AI B. SHAW, OF MEDFORD,MASSACHUSETTS, ASSIGNOR TO SHAW SPEGIALTY CO.

INC., OF WEST MED-FORD, MASSACHUSETTS, A CORPORATIQN 01 MASSACHU- SETTS.

STOPPEB FOR HOT-WATER BOTTLES.

esa tea.

Application filed February 7, 1921.

T 0 all whom it may concern.

Be it known that 1, Ar B. SHAW, a citizen of the United States ofAmerica. and a resident of Medford, in the county of Middlesex and Stateof Massachusetts, have invented certain new and useful Improvements in,Stoppers for lrlot-Vl ater Bottles. of which the following is aspecification.

This invention relates to stoppers for hot water bottles and the likeand has for its object 'the production of a device of this characterwhich will prevent leakage through the filling opening when the stopperis properly positioned therein.

The invention consists primarily in providing a packing disk so mountedon the stopper that when the packing disk is on its seat the stopper maybe rotated without effecting the rotation of said disk.

The invention further consists in interposing between said disk andstopper of a metal washer which rotates only with said disk and isadapted to contact with the end of the stopper and prevent the packingdisk from being worn by the rotation ofthe stopper when said disk isnon-revolubly positioned upon its seat.

The invention further consists in certain novel features of constructionand arrangement of parts which will be understood readily by referenceto the description of the drawings and to the claims to be hereinaftergiven.

For the purpose of illustrating the invention, one preferred formthereof is illustrated in the drawings, this form having; been found togive satisfactory and reliable results although it is to be understoodthat the various instrumentalities of which the invention consists canbe variously arranged and organized and the invention is not limited tothe precise arrangement and organization of these instrumentalities asherein shown and described except as required by the scope of theappended claims.

()f the drawings: Figure 1 represents a section of the-upper portion ofa hot water bottle showing; applied thereto a stopper embodying thefeatures of the present invention.

Figure 2 represents an elevation of the stopper.

Specification of Letters Patent.

, Patented Ju1y18. was.

Serial No. 442,968.

Figure 8 represents an elevation of the screw for supporting thepackingdisk of the stopper. I

Figure 4 represents a section of a portion of the bottom of the stopper.

Figure 5 represents a section of a metal washer to be mounted on thescrew. 7

Figure 6 represents a section of the packing disk of the stopper, and

Figure 7 represents a section of a smaller washer for clamping thepacking; disk to the larger washer.

Similar characters indicate like parts throughout the several figures ofthe drawing's.

In the drawings, 10 represents a portion of the upper end of a hot waterbottle having embedded therein a threaded socket 11 provided at thebottom with the inwardly extending flange 12.

A threaded stopper 13 is adapted to be screwed into the socket 11 bymeans of a handle 14.

Extending through the bottom wall 15 of the stopper 13 is a screw 16havinpa head 17 and a threaded shank 18.

The distance between the head 17 and the end of the thread 18 isslightly in excess of the thickness of the bottom 15 of the stopper 13.

The screw 16 is in axial alinement with the stopper 13 and a metalwasher 19 is nositioned on the threaded end 18 of the shank of saidscrew 16, said washer being turned on the thread 18 to the extreme endthereof so that nofurther movement of the vwasher toward the head 17 ispermitted.

The threaded shank 18 also extends through a packing. disk 20 of rubberor some similar resilient material and this disk 20 is forced againstthe face of the washer 19 by the smaller washer 21 threaded to the shank18 as shown in Figs. land 2 of the drawings.

The head 17 is provided with a screwdriver slot 22 and the shank 18 issimilarly provided with a screw-driver slot 23.

The slot 22 is utilized to prevent the screw 16 from turning when thewashers 19 and 21 are being turned upon the shank 18 in theoriginalinstallation of the various ele ments of the stopper. 1

When the disk 20 is clamped between the washers 19 and 21, said disk 20is obliged to turn with said washers and with the screw 16 onwhich saidwashers are threaded.

The opening 25 in the bottom 15 of the stopper 13 is free from threadsor other projections and in this opening 25 the screw 16 is free torotate.

l Vhen the stopper is being turned in the socket 11 no action on thepacking disk 20 takes place until said disk comes into contact with theannular flange 12 on said socket 11.

As soon as contact is made between the disk 20 and the flange 12, thefriction between the two will prevent the packing disk 20 rotating aboutits axis relatively to said flange 12, but the stopper 13 may continueto be rotated. in the socket 11 thereby jamming the packing disk 20against the flange 12 and making a perfectly tight fit through which nowater can escape.

The jamming of the central portion of the packing disk 20 by means ofthe smaller washer 21 causes the packing memberto be forced against thethreads of the screw 16 and makes a non-leakable joint through whichnone of the water in the bottle 10 can escape.

As the washer 19 is interposed between the rubber packing disk 20 andthe bottom wall 15 of the stopper 18, when the stopper 13 is turned, thewall 15 will contact with the washer 19 which is of metal and thereforenot easily injured.

This interposing of the washer 19 between the packing disk 20 and thebottom of the stopper 13 is a most important feature of the invention asin the turning of the stopper the rubber disk 20 will not be injured bycontacting with the bottom wall 15. Moreover when the disk 20 is broughtinto contact with its seat on the flange 12, it will not be injured bythe stopper rubbing in contact therewith.

.[n the stoppers now in general. use the packing disk is securedpermanently to the stopper and when the stopper is rotated and" therubber disk is in contact with its seat, the rubbing contactis liable toinjure and soon destroy the packing and as there is no ready means ofrenewing this packing the entire stopper is useless and an entirely newstopper must be provided. 7

In the present invention as soon as the rubber packing disk 20 comes incontactwith the flange 12, the friction between these two surfaces issuflicient to prevent the disk from rota-ting with the stopper and. as aconse quence there is no injury thereto.

Should the rubber disk deteriorate, it may readily be renewed. by

inserting a tool, such as a screw-driver in the slot and then removingthe smaller washer 2 and packing dlsk 20.

After this disk 20 has ben removed, a new disk 20 may be placed upon theshank 18 of the screw 16 and the locking washer 21. then replaced on thethreaded shank l8 and jammed against the packing disk 20.

This simple construction of stopper is most effective in use for itmakes the hot water bottle positively non-leakable at this point and thelife of the stopper is greatly prolongeoh Moreover, it provides a meanswhereby a new packing disk may be placed quickly upon the stopper thusmaking it unnecessary to throw away the body of the stopper.

It is believed that the operation and many advantages of the inventionwill be understood without further description.

Having thus described my invention, 1 claim:

1. A hollow threaded bottle stopper having a bottom plate, a headedscrew extending through said bottom plateand freely revoluble therein, apacking disk surrounding the shank of said screw, a washer threaded tosaid screw between said disk and stopper, and means for preventing thedisplacement of said disk.

2. A threaded bottle stopper having abottom plate, a headed screwextending through said bottom plate and freely revolubletherein, apacking disk surrounding the shank of saidscrew, a washer threaded tosaid screw between said disk and stopper, and another washer threaded tosaid screw and adapted to prevent the displacement of said disk.

3. A threaded bottle stopper having a bottom plate, a headed screwextending through said bottom plate and freely revoluble therein, apacking disk surrounding the shank of said screw, a washer threaded tosaid screw between said disk and stopper and permit ting slight endmovement of said screw, and means forpreventing the displacement of saiddisk.

f. A hollow threaded bottle stopper having a bottom plate, aheadedmember extending through said bottom plate and having a slot in itsouter end, a packing disk on sai d member, a washer threaded to saidmember between said disk and stopper, and a second wash'erthreaded tosaid member on the opposite side said disk and adapted to be movedendwise of said member and relatively to the first-mentioned washer toclamp said disk and insure its rotation with said threaded member.

5. A cylindrical threaded bottle-stopper having a bottom wall with: acentral opening; av headed member disposed within said opening with athreaded shank extending outwardlyl from said bottom wall; a washerthreaded to said shank; a metal washer also threaded to said shank; anda packing member clamped between said washers.

6. A cylindrical threaded bottle-stopper having a bottom Wall With acentral opening; a threaded member loosely mounted in said opening andprevented from displacement by a. head on said member disposed Withinsaid stopper; a metal Washer rigidly mounted on said threaded member andadapted to rotate freely relatively to said bottom Wall; a smallerclamping Washer also rigidly mounted on said threaded member;

and a packing member clamped between said 10 Washers.

Signed by me at 74L67 Old South Bldg, Boston, Mass, this 4th day ofFebruary,

AI B. SHAW. Witnesses:

WALTER E. LOMBARD, NATHAN C. LOMBARD.

